Sharp 8C221, Руководство по обслуживанию

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Service Manual
P A L S Y S T E M
C O L O U R
ELECTRICAL SPECIFICATIONS
Aerial Input
. . . . . . . . . . . . . . . . . . 75 ohm
Convergence. . . . . . . . . . . . . . . . Self Converging System
Focus . . . . . . . . . . . . . . . . . . .
electrostatic
Audio Power Output Rating . . . . . . . . . . 2.0 Watt (max.)
Intermediate Frequencies
Picture IF Carrier Frequency. . . . . . . . . . 36,875 MHz
Sound IF Carrier Frequency . . . . . . . . . . 31,375 MHz
Sub-Carrie;-Frequency . . 32,445 MHz (Nominal)
. . . . . . . . . . . . . . . . .
Power Rating . . . . . . . . . . . . . . . . . . . . . . . .
165 Watt
Speaker Size. . . . . . . . . . . . . . . . . . 19 x Dynamic
Voice Coil Impedance . . . . . . . . . . . ohms (at 400 Hz)
Sweep Deflection . . . . . . . . . . . . . . . . . . . . .
Tuning Ranges . . . . . . . . . . . . . VHF-Channels 0
11
F Channels 28 63
IMPORTANT SERVICE NOTES
Maintenance and repair of this receiver should down by
qualified service only.
SERVICING OF HIGH VOLTAGE SYSTEM AND
PICTURE TUBE
When servicing the high voltage system, remove static
charge from it by connecting a 1 OK ohm Resistor in series
with an insulated wire (such as a test probe) between picture
tube
and anode lead. (AC cord be
disconnected from AC outlet.)
1. Picture tube in this receiver employs implosion
protection.
3. Replace with tube of the same type number for continu-
ed safety.
3.
Do
not lift picture tube by the neck.
4. Handle the picture tube only when wearing shatter-proof
goggles and after discharging the high voltage completely.
X-RAY
This receiver is designed so that any X-ray radiation is
kept to an absolute minimum. Since certain malfunctions
or servicing may produce potentially hazardous radiation
with prolonged exposure at close range, the following
precautions should be observed:
1.
Do
not adjust the high voltage level above 27.5 at
1
2.
Do not
substitute a picture tube with unauthorized
types and/or brands which may cause excess X-ray
radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are
pinched or that hardware is not lodged between the
chassis and other metal parts in the receiver.
2. Inspect protective devices such as control
knobs, insulating fishpapers, cabinet
backs, adjustment
and compartment covers or shields, isolation
capacity networks, mechanical insulators etc.
The manufacturer reserves the right to vary specifications or use alternative materials as may be deemed necessary or desirable
at any time, any such change or variation being of a kind as not to reduce the quality performance or appearance substantially.
S H A R P
C O R P O R A T I O N O F L T D .
64-80 SEVILLE ST.,
FAIRFIELD, 2165
TEL: 02-728-9111